Gas-cock.



J. TOLHURST & A. WAIT.

GAS COOK.

APPLVIOATION nun APR. 25, 1912.

1,048,7 4, Patented Dec. 31, 1912.

Fig.2.

Witnesses: Y lnuen tors: 7/]mvd M JM A 44-42,

' .fective means is provided to lock any kind with the full knowledge ofthe person using ing of the valve to allow gas to escape when not sorequired.

. provided with notches a, cut in JOSEPH TOLHURST AND ALFRED WAIT, OFHAMILTON, ONTARIO, CANADE.

GAS-COCK.

Specification of'Letters Patent.

1912. Serial No. 693,198.

Application filed April 25,

To all whom it may concern Beit known that we, JOSEPH TOLHURST, acitizen of the Dominion of Canada, residing at 44 Picton street east,and ALFRED WAIT, a citizen of the Dominion of-Gana'da, residingat MountHamilton, both in the city of Hamilton, in the county of Wentworth, inthe Province of Ontario, Dominion of Canada, have invented certain newand useful Improvements in Gas-Cocks, of which the following is aspecification.

This invention relates to an improvement in gas cocks whereby aneconomical and etof agas cook in such a manner that the gas, cannot beturned on by accident, but only itthereby preventing the accidentalturn- The invention conslsts in a notched ring or washer attached to thebody portion, the plug portion passing through the ring, and containinga flat thumb piece for operating the plug. A pawl made to engage withthe notched ring. Saidpawl being flattened at the outer end as athumbpiece to operate it, a spring to operate the pawl. The outer end ofthe spring terminates in an upward spring arm to keep'the pawl intoengagement with the ratchet to lock the valve in the body portion.

The details of the invention will be more fully shown hereinafter.Reference'being had to the accompanying drawing, in which,'

Figure 1,-is-a side view of a gas cock'with safety device attached. Fig.2, is an end view of the same. Fig. 3, is a view of the ratchet ringdetached.

Similar letters refer to similar parts throughout the several views.

The improved gas cook comprises a body portion, A, and a plug portion B,the atter containing a flat thumb piece C, which must be. elongated to asufiicient distance away from the operating parts for turning the plugportion or valve, and to prevent the accidental use of the thumb pieceF; a ring or washer D, is formed on the body portion A, the proper placeto shut off gas at the very point Where the li ht goes out and beforethe gas key has turne the full dista'nce required to ring the thumbpiece 0, at right angles to the gas Patented Dec. 31,1912.

opening in the cock body, that is, before it.

is completely shut off, and also a notch to' the gas key or valve iscompleted. The said ring D, maybe made'of brass, iron, steel, or othermaterial, and hardened if necessary in" order to secure good wearingqualities. The said ring is fastened securely to the body A, by beingforced onto it and also secured by a pin'J, so that there is noossibility of its turning around. It may urther be stated that thenotches in the said ring are so arranged as to make it impossible toturn the gas key past the points where the cock is.

fully closed, or fully opened.

The latch or pawl E, with thumb attachment, is made of one piece ofmaterial (which like the ring D, may be made of brass, iron, steel orother material, and herdened if necessary and receives a twist to bringthe outer en of it into a proper position for a thumb piece F, tooperate the pawl end. The .C, (which as a groove cut in it or H,) bymeans of a wire spring G, which is bent upward at the outer end'G', andmade to press upward against the under side .of

pawl E, is-secured to the-gas kIeIy ugs.

the thumb piece F, to keep the pawl in proper contact with the notchedring D; the.

steel, into the mold, or by sim ly putting.

the notches a, on the pattern, an castingin the usual manner.

From the above description it will be seen that the safety device, whilebein quite easy to operate, cannot be unlocked y accident. The gas maybeturned off automati-.

cally without using the latch and one unacquainted with it may do so,but if wishiriigto turn the gas on again, will be prevente by the latch.

As the working parts of the locking device can be plainly seen by aerson standing in front of it, one glance show the necessity of placingthe thumb on the latch to release it, and how to turn the lug withoutstooping'or turning to examme the rear of gas cock as many of the gascocks have the stop at the rear end of the body which is a greatdisadvantage.

Having thus described our invention and its advantages, what we claim asnovel and desire to secure by Letters Patent, is

A gas cock comprising a body portion and a plug portion, said plugportion comprisin a flattened thumb piece, a ratchet forme upon the bodyportion, air outstanding hori- .7 zontal flange carried by said plugportion, a pair of outstanding ears formed upon said flange, a pawlmounted between said ears and comprising a ratchet engaging portion anda flattened thumb piece which lies par allel with the flattened thumbpiece of the plug portion and a wire member comprising a horizontallydisposed portion which passes through'said ears and said pawl and at itsterminal end bears upon said flange, and a vertical extension having aterminal end which bears against the fiat inner face of the thumb pieceof the pawl whereby said wire spring member serves the double functionof pivoting the pawl to the plug and holding said pawl into engagementwith said ratchet.

Signed at Hamilton, Ontario, Canada,

this 20th day of April, 1912.

JOSEPH TOLHURST. ALFRED WAIT.

In'the presence of- MAUD GUEST, GERTIE NIOHOLSDN.

